Attachment_1_-_L_J_Orphan_Well_Plug_and_Abandonment_and_Reclamation_Program.pdf

Bureau of Land Management Montana/Dakota’s State Office Date: 01/10/2022

Statement of Work and Specifications

Project Name L&J Orphan Well Plug and Abandonment and Reclamation Program

Objectives

To perform plug and abandonment and site reclamation operations of the existing oil and gas well bores.

Location

Work under this Contract is in Fall River County, South Dakota approximately 10 miles Southwest of Edgemont, South Dakota. The work location is shown on the attached maps and the legal locations are listed below:

1. Wulf Fed #2 (Oil Well-Shut In) U.S. Well number 40-047-20089, T9S, R2E, SWN E S15, Lease Number SDM 39501, SD DENR Permit number 975, Latitude 43.268493, Longitude - 103.866824; Surface Owner U.S. Forest Service, Fall River Ranger District, Contact Mathew Lucas 605-745-8212

2. Wulf Federal #1 (Oil Well-Shut In) U.S. Well number 40-047-20082, T9S, R2E, SENW S15, Lease Number SDM 39501, SD DENR permit number 939, Latitude 43.268165, -103.871993, Surface Owner: U.S. Forest Service, Fall River Ranger District, Contact Mathew Lucas 605-745-8212

3. Poseidon Fed 24-32 (Water Injection Well) U.S. Well number 40-047-20246, T9S, R02E, SESW S32 SESW R2E, Lease Number SDM78155X (SDM66345), SD DENR Permit number 1487, Latitude 43.219459, Longitude -103.90925; Surface Owner U.S. Forest Service, Fall River Ranger District, Contact Mathew Lucas 605-745-8212

4. Nautilus 21-5 (Oil Well-Shut In) U.S. Well number 40-047-20250, T10S, R02E, NENW S05, Lease Number SDM65529 (SDM78155X), SD DENR permit number 1494, Latitude 43.215856, Longitude -103.909251, Surface Owner U.S. Forest Service, Fall River Ranger District, Contact Mathew Lucas 605-745-8212

Total Acres ~8 Work Dates

& Constraints Upon Issuance of Contract All operations are weather dependent

Well Background

1. Wulf Fed #2 (Oil Well-Shut In) ** Possible H2S in Dakota, Lakota and Sundance Formations**

This well has 8.625 in diameter, 24-pound steel surface casing set at 0-243 feet and cemented to surface in a 12.5-inch hole. The 5.5 in diameter, 15.5-pound steel production casing is set at 2734 feet and is cemented up to 1660 feet. Estimated top of cement in 8.625x5.5” is at 1660 feet by cement bond log 7/19/1980. Perforations are 2655 feet to 2658 feet. There are 2–400-barrel oil tanks possibly containing 60-80 barrels of oil in one tank and possibly 20 barrels of oil in the other.

There are 2 fiberglass water tanks on location containing a foot of water each. Pumpjack has been removed. There is a cement skim tank next to the heater treater and buried piping on location. The name on the well sign shows Fed Edgemont #2.

2. Wulf Federal #1 (Oil Well-Shut In)

**Possible H2S in Dakota, Lakota and Sundance Formations**

This well has 8.625 in diameter, 24-pound steel surface casing set at 0 feet to 236 feet in a 12.25-inch hole and cemented to surface. The 5.5 in diameter, 15.5-pound steel production casing is set at 2798 feet and is cemented to 1660 feet. The completion report shows there are perforations at 2745- 2749 (1 shot per foot), 2742-2745 (2 shots per foot), and 2740-2742’ (2 shots per foot). There is possibly a tool stuck in the hole and 8000 ppm H2S on location.

3. Poseidon Fed 24-32 (Water Injection Well)

This well has 8.625 in diameter, 24-pound steel surface casing set at 0 feet to 375 feet and cemented to surface with full returns. The 5.5 in diameter, J55 grade, 17-pound steel production casing is set at 3294 feet and is cemented to surface in 7 7/8” hole. A bit and scraper were run on this well on 11/19/2020 and showed total depth of well at 2887 feet. A Mechanical integrity test was performed on 11/19/2020 and failed. Possible holes in casing between 1945 feet and 2005 feet. Squeeze holes are located around 1600 feet to 1850 feet. Top of cement in surface casing is reported to be 2620 feet. Well sign shows Fed Edgemont #2. Well name was changed to Poseidon Fed 24-32.

4. Nautilus 21-5 (Oil Well-Shut In)

This well has 8.625 in diameter, J55 grade, 24-pound steel surface casing set at 0 to 366 feet and cemented to surface in a 12.25-inch hole. The 5.5 in diameter, J55 grade, 14, 15.5 and 17-pound steel production casing is set at 3338 feet and is cemented to 1990 feet and 1558 to 963 feet.

Perforations at Lower 1st Leo 3008 feet to 3020 feet 2 shots per foot. The facility contains 1 heater treater, 3–400-barrel oil tanks, wooden pumpjack pad and flare pit. The flare pit can be used as a washout pit for plugging cementing operations. There is possible oil and H2S in tanks.

Site Specific P&A Procedures

Wulf Fed #2 (Oil Well-Shut In)

1. Set and test anchors, as necessary.

2. Move in and rig up to pull rods and tubing.

3. Nipple up blow out prevention equipment.

4. Set cast iron bridge plug at 2600 feet and spot 15 sacks of class G neat cement on top.

5. Perforate at 1560 feet. Set cast iron cement retainer at 1460 feet. Establish an injection rate.

Squeeze 60 sacks of class G neat cement thru perforations, sting out of cast iron cement retainer and spot10 sacks class G neat on top of cast iron cement retainer.

6. Perforate at 600 feet, set cement retainer at 500 feet. Establish an injection rate. Squeeze 60 sacks of class G neat cement thru perforations, sting out of cast iron cement retainer and spot 10 sacks class G neat on top of cast iron cement retainer.

7. Perforate at 300 feet, establish circulation to surface. Spot a 50 sacks balance plug inside and outside of all annuli at surface shoe across the interval of [300 feet – 200 feet]. Perform shoe plug before performing surface plug perforations. Wait 8 hours and tag surface shoe plug.

Date: 01/10/2022

8. Perforate at 60 feet and establish circulation to surface. Circulate cement to surface through perforations until clean cement returns and are witnessed at surface.

9. Remove all equipment and refer to item II above under Prescriptions for plug and abandonment marker specifications.

Wulf Federal #1 (Oil Well-Shut In)

2. Move in rig and nipple up blow out prevention equipment.

3. Run in hole with an Overshot and 2-7/8” Grapple and attempt to pull the stuck tubing.

NOTE: If the tubing is successfully pulled out of hole, go to step 4.

NOTE: If tubing is not successfully pulled out of hole, shut down and wait on orders from BLM Petroleum Engineer and Petroleum Engineer Technician witnessing operations

4. Set cast iron bridge plug at 2690 feet and spot 15 sacks of class G neat cement on top.

5. Perforate at 1250 feet, set cement retainer at 1150 feet. Establish an injection rate. Squeeze

60 sacks of class G neat cement thru perforations, sting out of cast iron cement retainer and spot 10 sacks class G neat on top of cast iron cement retainer.

6. Perforate at 1600 feet, set cement retainer at 1500 feet. Establish an injection rate. Squeeze 60 sacks of class G neat cement thru perforations, sting out of cast iron cement retainer and spot 10 sacks class G neat on top of cast iron cement retainer.

7. Perforate at 800 feet, set cement retainer at 700 feet. Establish an injection rate. Squeeze 60 sacks of class G neat cement thru perforations, sting out of cast iron cement retainer and spot 10 sacks class G neat on top of cast iron cement retainer.

8. Perforate at 286 feet, establish circulation to surface. Spot a 50 sacks balance plug inside and outside of all annuli at surface shoe across the interval of [286 feet – 186 feet]. Perform shoe plug before performing surface plug perforations. Wait 8 hours and tag surface shoe plug.

9. Perforate at 60 feet and establish circulation to surface. Circulate cement to surface through perforations until clean cement returns are witnessed at surface.

10. Remove all equipment and refer to item II above under Prescriptions for plug and

Poseidon Fed 24-32 (Water Injection Well)

2. Set cast iron bridge plug at 2800 feet and spot 15 sacks of class G neat cement on top.

3. Perforate at 1560 feet, set cement retainer at 1460 feet. Establish an injection rate.

Squeeze 70 sacks of class G neat cement thru perforations, sting out of cast iron cement retainer and spot 15 sacks class G neat on top of cast iron cement retainer.

4. Perforate at 950 feet, set cement retainer at 850 feet. Establish an injection rate.

Squeeze 70 sacks of class G neat cement thru perforations, sting out of cast iron cement retainer and spot 15 sacks class G neat on top of cast iron cement retainer.

5. Perforate at 360 feet, establish circulation to surface. Spot a 50 sacks balance plug inside and outside of all annuli at surface shoe across the interval of [370 feet – 270 feet]. Perform shoe plug before performing surface plug perforations. Wait 8 hours and tag surface shoe plug.

Date: 01/10/2022

6. Perforate at 60 feet and establish circulation to surface. Circulate cement to surface through perforations until clean cement returns are witnessed at surface.

7. Remove all equipment and refer to item II above under Prescriptions for plug and

Nautilus 21-5 (Oil Well-Shut In)

2. Move in rig up and nipple up blow out prevention equipment.

3. Pull rods and tubing.

4. Set cast iron bridge plug at 2950 feet and spot 15 sacks of class G neat cement on top.

5. Perforate at 765 feet, set cement retainer at 665 feet. Establish an injection rate. Squeeze

60 sacks of class G neat cement thru perforations, sting out of cast iron cement retainer and spot 10 sacks class G neat on top of cast iron cement retainer.

6. Perforate at 415 feet, establish circulation to surface. Spot a 50-sack balance plug inside and outside of all annuli at surface shoe across the interval of [415 feet – 315 feet]. Perform shoe plug before performing surface plug perforations. Wait 8 hours and tag surface shoe plug.

7. Perforate at 60 feet and establish circulation to surface. Circulate cement to surface through perforations until clean cement returns are witnessed at surface.

8. Remove all equipment and refer to item II above under Prescriptions for plug and

Additional Instructions

Records:

A daily tour sheet (driller’s log) shall be kept on the work site. This sheet must keep a current description of all activities conducted during each 24-hour period. All service company's reports must also be kept at the work site. All records shall be available for inspection during the job and shall be submitted to the COR at the conclusion of the job.

Operational Plan:

The Contractor shall provide a work schedule with any updated changes daily. The BLM COR/PET will be on the work site during the plugging operations to ensure that needed approvals for changed conditions can be expedited.

Changes in the Plugging Method:

All changes the Contractor proposes to the plugging program shall require approval prior to implementation. If unexpected conditions occur at the time of plugging, operations shall be immediately shut down and the BLM Contracting Officer’s Representative (COR), Petroleum Engineer (PE), Petroleum Engineering Technician (PET) and Contracting Officer (CO) shall be immediately notified. The BLM PET/COR will be on the work site during plugging operations and will provide the PE information for prompt approval of contingency changes.

Date: 01/10/2022

Contractor must supply:

Completion/Work Over Rig:

The rig shall have the capacity to operate to a depth of 4,000 feet. The rig shall be furnished with crew and supervision. Provide the manufacturer's name, size and capacity for the rig and the following required accessory equipment:

1. Tubing tools for 2-7/8” or 2-3/8” work string, including any necessary bits, scrapers, cast iron bridge plugs or cast-iron cement retainers appropriately sized for the casing string involved.

2. Power swivel for any rotational work necessary to clean out the existing wellbore to set the plugs at the required depth.

Well Control Equipment:

The well control equipment shall consist of a full opening valve capable of providing full closure of the wellbore during non-operational periods.

Circulating Equipment:

The circulating equipment shall consist of the mud pump and mud tanks. The mud pump shall be capable of discharge volumes and discharge pressures required for the individual wells. Enough mud tanks shall be furnished to contain the drilling mud required for plugging operations.

Cementing Equipment:

The cementing equipment shall be capable of batch mixing of cement slurry. A mud/multi-purpose pump shall be provided that can pump the cement slurry to the plug depths as specified.

Storage Tanks - Well Fluids:

Enough storage tanks shall be furnished to contain all well fluids circulated from the well during plugging operations. Hazardous materials or hydrocarbons shall be disposed of in an approved State facility.

Additional Instructions:

A. All operations shall perform during dry weather/dry surface conditions only.

B. All operations shall perform in daylight hours Monday through Friday.

C. Contractor shall remove and dispose of all trash and debris from well sites.

D. Contractor shall have all personnel supplied with H2S monitors and H2S training. At a minimum, a H2S detector must be capable of reading at least 10 ppm shall be placed near the wellbore during the P&A operations. Should H2S be found in amounts of 10 ppm or greater, the operator must then comply with the requirements listed in Onshore Oil & Gas Order No 6.III., C. and API RP 49. Please note that a H2S contingency plan should be implemented.

E. Contractor shall have all equipment, workstring, BOP, wireline downhole and all relevant equipment H2s rated.

F. Contractor shall have a 2 ram BOPE installed prior to plug and abandon operations commence.

G. Contractor shall brush hog, if necessary, to reduce fire danger prior to performing work.

H. Contractor shall pull all tubing, airlines, wire, pumps, and all related well equipment from wellbore, if present.

Date: 01/10/2022

I. Contractor shall remove ALL infrastructure, anchors (shall be removed or cut off below ground level), equipment (such as and including, oil tanks, water knockouts, heater treaters, water tanks, cement pits, cement pads, cement tanks, footers, pumpjack pads) and salvage items (such as casing, tubing, rods and any downhole equipment) on well pads and locations and dispose of at an approved facility, landowner approved site or contractor’s wareyard.

J. All wells shall run bit and scraper or ring gauge to lowest setting depth of retainers or bridge plugs. Bit and scraper shall be run on a tubing work string.

K. A casing test shall consist of pressuring up casing to 500 pounds per square inch (psi) for 30 minutes with no more than a 10% bleed off in pressure. If MIT fails, wait on orders from BLM Petroleum Engineer (PE), Petroleum Engineer Technician (PET) and Contracting Officer Representative (COR) before proceeding.

L. Plug the wellbores per the provided plugging specifications.

M. All displaced fluids shall be captured and transported to a DEQ approved Produced Water

Disposal & Treatment facility.

N. An earthen pit may be excavated to capture any cement circulated to surface and to clean cementing equipment. Pits must be fenced until dry or pumped and then filled in and recontoured.

O. If the mechanical integrity test fails, all balanced plugs shall be tagged after a minimum wait on cement time of 4 hours.

P. All cement shall be Class G mixed with fresh water and a slurry weight of 15.8 pounds per gallon and shall consist of at least 50% cement by weight. Cement volumes are based on cement with 1.15 cubic feet per sack yield. Volumes must be adjusted accordingly if cement with a different yield is used. Some or all the open casing plugs may need to be tagged at the discretion of the BLM PET inspector.

Q. A minimum of 9 pounds per gallon mud/brine shall be placed between plugs.

R. Any cement plug that is set where the BHT is 230 degrees Fahrenheit or greater must contain silica sand or silica flour as an additive. Cement wait time shall be at least 4 hours.

S. All balance plugs must be tagged with drill string if hole is not static.

T. If a cement plug is tagged below the prescribed depth, remedial cementing shall occur until cement plug can be tagged at prescribed depth.

U. Water used for plugging operations shall be from a municipal source.

V. Removal of pipe: Excavate approximately 3 to 5 feet deep, cut pipe from valve or riser

(typically up to 2 inch or 3-inch diameter and black HDPE), fuse cap to existing pipe, remove and dispose of valve, backfill with existing material, and compact in one-foot lifts.

Valve sets may be up to 8-inch diameter.

W. Electrical panels: Contractor shall be responsible for locates, verifying conductors are “dead”, excavating approximately 3-feet deep, cutting the wires, backfilling with existing materials, compacting in one-foot lifts.

X. Strip 4 inches of topsoil from a 10-foot radius around the well head and store in a pile separately from other soils and adjacent to the work site for final reclamation. Excavate around the well casing to a depth adequate to cut and cap the well casing a minimum of 3 feet below ground surface.

Y. Well pad location must be recontoured to the original topography. Additional reclamation such as vegetation and monitoring specifications are in the “Reclamation” section.

Z. Contractor shall supply and install identification markers on all wells in this contract as per Onshore Order 2.III.G.10. Permanently weld a well identification marker to the cut off well casing. The well identification marker shall be a metal plate at least ¼-inch thick with a 1/8” weep hole. The following information shall be permanently placed on the marker by beading-on with a welding torch or engraving the following: 1) BLM 2) Lease serial

Date: 01/10/2022 number, 3) well name and number 4) legal location – Qtr/Qtr Section, Township and Range;

5) U.S well number (formerly known as API number). Bury the marker with native material.

AA. Subsequent Plugging Report: Within 30 days after plugging work is completed, file one original and three copies of the well plugging Report of Abandonment utilizing Form 3160-5 to:

Andrew Hamilton Petroleum Engineer North Dakota Field Office 99 23rd Ave West Dickinson, ND 58601

Please also copy:

Joe Bramhall Supervisory Petroleum Engineer Technician North Dakota Field Office 99 23rd Ave West Dickinson, ND 58601

Pamela Belus I&E Coordinator/COR/PET 5001 Southgate Drive Billings, MT 59101

The report shall give in detail the plugging operations that were performed, the setting depth of cast iron bridge plugs, the length of cement plugs placed, the amount (cubic feet or sacks), yield and pounds per gallon of cement used, the size and depth of casing left in the well and any other pertinent information regarding the plugging of the well. The sundry must include the date well was plugged.

General Execution:

In general, the orphan wells shall be plugged following the standards established in Onshore Oil and Gas Order No 2 [54 FR 39528, Sept. 27, 1989], Section G. Drilling Abandonment Requirements:

“The following standards apply to the abandonment of newly drilled dry or non- productive wells … All formations bearing usable-quality water, oil, gas, or geothermal resources, and/or a prospectively valuable deposit of minerals shall be protected. …The hole shall be in static condition at the time any plugs are placed (this does not pertain to plugging lost circulation zones). … Plugging design for an abandonment hole shall include the following:

1. Open Hole.

i. A cement plug shall be placed to extend at least 50 feet below the bottom (except as limited by total depth (TD) or plugged back total depth (PBTD)), to 50 feet above the top of:

Date: 01/10/2022

a. Any zone encountered during which contains fluid or gas with a potential to migrate;

b. Any prospectively valuable deposit of minerals.

ii. All cement plugs, except the surface plug, shall have sufficient slurry volume to fill 100 feet of the hole, plus an additional 10 percent of slurry for each 1,000 feet of depth.

iii. No plug, except the surface plug, shall be less than 25 sacks without receiving specific approval from the authorized officer.

iv. Extremely thick sections of single formation may be secured by placing 100-foot plugs across the top and bottom of the formation, and in accordance with item ii hereof.

v. In the absence of productive zones or prospectively valuable deposits of minerals which otherwise require placement of cement plugs, long sections of open hole shall be plugged at least every 3,000 feet. Such plugs shall be placed across in-gauge sections of the hole, unless otherwise approved by the authorized officer.

2. Cased Hole.

A cement plug shall be placed opposite all open perforation and extend to a minimum of 50 feet below (except as limited by TD or PBTD) to 50 feet above the perforated interval. All cement plugs, except the surface plug, shall have sufficient slurry volume to fill 100 feet of hole, plus an additional 10 percent of slurry for each 1,000 feet of depth. In lieu of the cement plug, a bridge plug is acceptable, provided:

i. The bridge plug is set within 50 feet to 100 feet above the open perforations.

ii. The perforations are isolated from any open hole below; and

iii. The bridge plug is capped with 50 feet of cement. If a bailer is used to cap this plug, 35 feet of cement shall be sufficient.

3. Casing Removed from Hole.

If any casing is cut and recovered, a cement plug shall be placed to extend at least 50 feet above and below the stub. The exposed hole resulting from the casing removal shall be secured as required in items 1i and 1ii hereof.

4. An additional cement plug placed to extend a minimum of 50 feet above and below the shoe of the surface casing for intermediate string, as appropriate).

5. Annular Space. No annular space that extends to the surface shall be left open to the drilled hole below. If this condition exists, a minimum of the top 50 feet of annulus shall be plugged with cement.

6. Isolating Medium. Any cement plug which is the only isolating medium for a usable water interval or a zone containing a prospectively valuable deposit of minerals shall be tested by tagging with the drill string. Any plugs placed where the fluid level will not remain static also shall be tested by either tagging the plug with the working pipe string or pressuring to a minimum pump (surface) pressure of 1,000 psi, with no more than a 10 percent drop during a 15-minute period (cased hole only). If the integrity of any other plug is questionable, or if the authorized officer has specific concerns for which he/she orders a plug to be tested, it shall be tested in the same manner.

7. Silica Sand or Silica Flour. Silica sand or silica flour shall be added to cement exposed to bottom hole static temperatures above 230°F to prevent heat degradation of the cement.

Date: 01/10/2022

8. Surface Plug. A cement plug of at least 50 feet shall be placed across all annuluses. The top of this plug shall be placed as near the eventual casing cutoff point as possible.

9. Mud. Each of the intervals between plugs shall be filled with mud of sufficient density to exert hydrostatic pressure exceeding the greatest formation pressure encountered while drilling such interval. In the absence of other information at the time plugging is approved, a minimum mud weight of 9 pounds per gallon shall be specified.

10. Surface Cap. All casing shall be cut-off at the base of the cellar or 3 feet below final restored ground level (whichever is deeper). The well bore shall then be covered with a metal plate at least 1/4 inch thick and welded in place, or a 4-inch pipe, 10-feet in length, 4 feet above ground and embedded in cement as specified by the authorized officer. The well location and identity shall be permanently inscribed. A weep hole shall be left if a metal plate is welded in place.

11. The cellar shall be filled with suitable material as specified by the authorized officer and the surface restored in accordance with the instructions of the authorized officer.”

Reclamation

Well Name

Existing infrastructure and machinery Reclamation Plan Requirements Specific to location Wulf Federal #1 and tank battery

Water knockout tank

2 oil stock tanks heater treater

2 water tanks

Powerline and pole

2 pits

Possible skim tank

Pipeline tie-in

• USFS indicator species are the Black-Tailed Prairie Dog and Greater Sage Grouse. If either of these species are observed the Forest Service needs to be informed immediately, and all reclamation activities will be halted until any required conservation measures are put into place.

• No new roads will be built; existing access road will be used to access the location

• Roads may be upgraded if necessary to move equipment in/out of the location.

• Topsoil associated with plugging procedures shall be stripped to a depth of 4 inches prior to any surface disturbing activities.

• All remaining areas which are not scraped and leveled to accommodate the rig and reclamation activities shall be left otherwise undisturbed. The objective is preserving as much of the mature vegetation on the well pad or tank battery as possible.

• Surface disturbance activities shall be confined to the footprint of the rig and associated plugging procedures and requirements, in addition to surface disturbance associated with infrastructure and soil removal.

• Remove all existing infrastructure and machinery from the location.

• Remove all contaminated soil from under/around all tanks and the heater treater. Soil should be excavated to a depth of 10” if necessary to assure removal of all contamination.

• Remove the powerline and pole.

• Backfill and recontour the existing pits.

Date: 01/10/2022

• The wellhead and all infrastructure associated with in-ground pipeline or transportation of product shall be cut and capped at a depth of 4’below ground, if possible. This includes, but not limited to water and gas piping and electrical conduits, deadmen, and any building footers.

• Recontour the surface disturbance associated with the plugging back to the original form.

• Fill in and recontour all pits created for plugging operations. No depressions may be left where water could pond with the following exceptions: areas adjoining the reclaimed sites that have depressions not created by the contractor’s actions and/or micro-depressions created to support reclamation success. The intent is to promote positive drainage in the area and restore positive drainage in the disturbed areas.

• After all equipment has left the well site, the road will be reseeded by drill or harrowing. Do not rip the road.

• Remove all fencing. The location does not need to be fenced after plugging and reclamation procedures are complete.

• Reseed the location with a seed mix determined by the Surface Management Agency

• Placement and monitoring of erosion control methods, if necessary.

Wulf Federal #2 Well head only • USFS indicator species are the Black-Tailed Prairie Dog and Greater

Sage Grouse. If either of these species are observed the Forest Service needs to be informed immediately, and all reclamation activities will be halted until any required conservation measures are put into place

• No new roads will be built; existing access road will be used to access the location

• Roads may be upgraded if necessary to move equipment in/out of the location.

• Topsoil associated with plugging procedures shall be stripped to a depth of 4 inches prior to any surface disturbing activities.

• All remaining areas which are not scraped and leveled to accommodate the rig and reclamation activities shall be left otherwise undisturbed. The objective is preserving as much of the mature vegetation on the well pad as possible.

• Surface disturbance activities shall be confined to the footprint of the rig and associated plugging procedures and requirements, in addition to surface disturbance associated with infrastructure and soil removal.

• The wellhead and all infrastructure associated with in-ground pipeline or transportation of product shall be cut and capped at a depth of 4’below ground, if possible. This includes, but not limited to water and gas piping and electrical conduits, deadmen, and any building footers.

• Recontour the surface disturbance associated with the plugging back to the original form.

• Fill in and recontour all pits created for plugging operations.

• After all equipment has left the well site, the road will be reseeded by drill or harrowing. Do not rip the road.

• Reseed the location with a seed mix determined by the Surface

Management Agency

Date: 01/10/2022

• Placement and monitoring of erosion control methods, if necessary.

Poseidon Fed 24-32

Well head only • USFS indicator species are the Black-Tailed Prairie Dog and Greater Sage Grouse. If either of these species are observed the Forest Service needs to be informed immediately, and all reclamation activities will be halted until any required conservation measures are put into place

• No new roads will be built; existing access road will be used to access the location

• Roads may be upgraded if necessary to move equipment in/out of the location.

• Topsoil associated with plugging procedures shall be stripped to a depth of 4 inches prior to any surface disturbing activities.

• All remaining areas which are not scraped and leveled to accommodate the rig and reclamation activities shall be left otherwise undisturbed. The objective is preserving as much of the mature vegetation on the well pad as possible.

• Surface disturbance activities shall be confined to the footprint of the rig and associated plugging procedures and requirements, in addition to surface disturbance associated with infrastructure and soil removal.

• The wellhead and all infrastructure associated with in-ground pipeline or transportation of product shall be cut and capped at a depth of 4’below ground, if possible. This includes, but not limited to water and gas piping and electrical conduits, deadmen, and any building footers.

• Recontour the surface disturbance associated with the plugging back to the original form.

• Fill in and recontour all pits created for plugging operations.

• After all equipment has left the well site, the road will be reseeded by drill or harrowing. Do not rip the road.

• Reseed the location with a seed mix determined by the Surface

Management Agency

• Placement and monitoring of erosion control methods, if necessary.

Nautilus 21-5 and tank battery

Well head only

Heater treater

3 oil stock tanks

Flare pit

Pipeline tie-in

• USFS indicator species are the Black-Tailed Prairie Dog and Greater Sage Grouse. If either of these species are observed the Forest Service needs to be informed immediately, and all reclamation activities will be halted until any required conservation measures are put into place.

• No new roads will be built; existing access road will be used to access the location

• Roads may be upgraded if necessary to move equipment in/out of the location.

• Topsoil associated with plugging procedures shall be stripped to a depth of 4 inches prior to any surface disturbing activities.

• All remaining areas which are not scraped and leveled to accommodate the rig and reclamation activities shall be left otherwise undisturbed. The objective is preserving as much of the mature vegetation on the well pad or tank battery as possible.

• Surface disturbance activities shall be confined to the footprint of the rig and associated plugging procedures and requirements, in addition to surface disturbance associated with infrastructure and soil removal.

Date: 01/10/2022

• Remove all existing infrastructure and machinery from the location.

• Remove all contaminated soil from under/around all tanks and the heater treater. Soil should be excavated to a depth of 10” if necessary to assure removal of all contamination.

• Remove the powerline and pole.

• Backfill and recontour the existing pits.

• The wellhead and all infrastructure associated with in-ground pipeline or transportation of product shall be cut and capped at a depth of 4’below ground, if possible. This includes, but not limited to water and gas piping and electrical conduits, deadmen, and any building footers.

• Recontour the surface disturbance associated with the plugging back to the original form.

• Fill in and recontour all pits created for plugging operations. No depressions may be left where water could pond with the following exceptions: areas adjoining the reclaimed sites that have depressions not created by the contractor’s actions and/or micro-depressions created to support reclamation success. The intent is to promote positive drainage in the area and restore positive drainage in the disturbed areas.

• After all equipment has left the well site, the road will be reseeded by drill or harrowing. Do not rip the road.

• Remove all fencing. The location does not need to be fenced after plugging and reclamation procedures are complete.

• Reseed the location with a seed mix determined by the Surface Management Agency

• Placement and monitoring of erosion control methods, if necessary.

Attachments

See attached figures for maps and photos.

Figure 1. Project Area Overview Map Figure 2. Well location proximity Wulf 1Federal and Wulf 2 Federal.

Figure 3. Well location proximity map Nautilus 21-5 and Poseidon 24-32.

Figure 4. Wulf 2 Federal aerial well location Figure 5. Wulf 2 Federal wellbore schematic Figure 6. Wulf 2 Federal well location photo Figure 7. Wulf 1 Federal ariel well location Figure 8. Wulf 1 Federal wellbore schematic Figure 9. Wulf 1 Federal well location photo Figure 10. Poseidon 24-32 ariel well location Figure 11. Poseidon 24-32 wellbore schematic Figure 12. Poseidon 24-32 well location photo Figure 13. Nautilus 21-5 aerial well location Figure 14. Nautilus 21-5 wellbore schematic Figure 15. Nautilus 21-5 well location photo

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Wulf 2 Federal

Figure 7

Figure 8

Figure 9

Wulf 1 Federal

Figure 10

Figure 11

Figure 12

Poseidon Federal 24-

Figure 13

Figure 14

Figure 15

Project Contacts

Plug and Abandonment Operations Contact Montana State Office:

Andrew Hamilton North Dakota Field Office Petroleum Engineer 701-227-7748

Pamela Belus Inspection & Enforcement Coordinator Petroleum Engineering Technician (PET) Contracting Officer’s Representative (COR) Montana State Office 307-217-0736

Reclamation Operations Contact:

Tessa Wallace Physical Scientist Montana State Office 406-750-1653

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